William h



; To all @oliemt may concern .r

' medean screw;

i Wr LLI-A MY HfP--L UMH or New Yorin, N, r.Al

y "Lc'ttcrsllatent o; 94,971', Septembernfldgwantcdated Septante/r n u iaovnmrwm i y .t been sCRE WATERELE'MTORS' The referred to these Lettonel15a-teni: and makingprt of the name.

f-*Beit known that I,W1 LL1AM-H.PLUns,cf` 1.-he :city and State of NewYork,\have invented, made, and

applied touse,`a ceitainnew and useful Improvement i in ArchimedeanScrews; and Ldo hereby declare the i following tobe a full, clear, andexact description of the said invention, reference being hadtotheannexed drawing, making part of this specification, whereinr yFigure lis a vertical section of nl y improved Archi- Figure 2 isanelevation of the same; and

Figure 3 is asectionalplan, atthe line a: x, iig. 1.

Similar `,marks of' reference denote the same parts. In the useofArchiniedean screws forraisingmiter yf litlicultyhas been experiencedin oonsequence of ,the

lower journal and box wearing-.out rapidly, by the. gritty materialspassing-into the 'same while beneath tbe water, and this ispartienlarlyvthe case where thev 1 screw is employed for raising sandvand water, in gold and othermiiiing-operations. i The natur-cof my saidinvention consists in a tub i applied atjtlie vlower end of thescrew-cylinder, and rei i vvolving with it'ior receiving the. liquid tobe raised,

thereby ktyeping` theistep or lower journal clean',and

i -iree fromtater or 'gritty' particles also, in flanges and rimsappli'iivd to the upper part of the screw-cylinder,

so that the water will be'delivered bya spout without i" runningjdowuthe outside of the cylinder;` and lastly, in an arrangement of gearingto drive the cylinder, so,

as 'to steady and partially support the same near the l i middle partthereof.`

In the drawingf .a represents a tub, applied'around the bottom` ofthecylinder k, within whichis the spiral worm or screw, as usual. i i iThe cylnder la is set at an inclination, and an'openi ing is provided atthe bottom, on .one side, and within the tub a,` so that the liquid ormaterial supplied by the spout b into the tub a shall be directed intothe cylinder' 7c, by the Wing a within the tub a, (see iig. 3,) assaidtub and cylinder revolve together in the direction of the arrow.

The step" or lower journal m is of any usual coustruction, and itiskept` dry and clean in consequence j sof the use of the tub a.

Theupper endof the screw k is supported by a journal and box, n, asusual, and the liquid is raised and delivered bythe revolution ofthescrew-cylinder."

g. is a dange,- around the upper' end oi the cylinder 1r, with a pendentrim, h, above the stationary-enclos' ing spout or discharge-box Ii, andaround theopening ofthe same, through which the cylinder k passes, is)

a rim, t'. These parts being properly placed, the liquid,

arid other material overflowing from the cylinder'k,

falls upon the iiange g, and passes away by thes'pout E, and nothing canrun back' upon the extelioriithef' n conseqiwnceof the drip-ring h andprol,

cylinder 7a, jecting rim I The pulley f is to be rotatedA by competentpower,

and turns the pinion c, that is formed with a conical' port-imi, 2,taking the conical portion 3 and liange 4 ofthe bevel-gear il., Theseparts steady and-support the cylinder k near the middle thereof, andteeth, at

5 and o', interlocking, insureahe rotation 'of the cyliufgf"r der kbythe pulley jl The teeth 5 and 6, do nothave to bear any of the weight,as the conical surfaces sustain the saine.lv

When the screw-cylinder his of considerablelength, it may be stcadiedand sustained by 'friction-rollers applied atsuitable points.

What I claim, and desire to securebyLetters' Pat-f'.

l'. The tub a, attache-dV to the lower end of the -in'- clinedscrew-cylinder k, and revolving with the same,

in combination with the spout b for discharging the water into said tubo, so as to keepthe'step ory jourgalmfee from'waterfand grittysubstances, as specie 2, The .wing a', in combination with lthe tub w,and screw-cylinder 7c, as and for the purposes specified.

3. The dischargabox l, formed with the -rirn i, and enclosing theupperend of the inclined screw-cylinder It, iii-combination with the flange gand pendent rim h', as and for Vthe purposes specified;

4, The conical support 3, surrounding the screw- Vcylinderkfincoinbination with the conical support 2, i upon the shaft of theplley j, so as to steady and sustain the inclined screw-cylinder whilebeing revolved,

substantially as set forth.

In witness whereof', I have hereunto set my signaf tnre, this .'.7 thday of July, A. D. 1868. i 1 A W. H. PLUMB,

, Witnesses:

Lerrone W. Samoan, Qms. H1. Sierre.

